net: update documentation for ListenTCP, ListenUDP
Adds the missing wildcard port assignment description to ListenUDP.
Also updates the wildcard port description on ListenTCP.
R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/8063043
diff --git a/src/pkg/net/udpsock_plan9.go b/src/pkg/net/udpsock_plan9.go
index 66dcbab..4cf0ca3 100644
--- a/src/pkg/net/udpsock_plan9.go
+++ b/src/pkg/net/udpsock_plan9.go
@@ -164,7 +164,10 @@
}
// ListenUDP listens for incoming UDP packets addressed to the local
-// address laddr. The returned connection c's ReadFrom and WriteTo
+// address laddr. Net must be "udp", "udp4", or "udp6". If laddr has
+// a port of 0, ListenUDP will choose an available port.
+// The LocalAddr method of the returned UDPConn can be used to
+// discover the port. The returned connection's ReadFrom and WriteTo
// methods can be used to receive and send UDP packets with per-packet
// addressing.
func ListenUDP(net string, laddr *UDPAddr) (*UDPConn, error) {
